REDJEKI, Indah Sri; MUHAJIR, R. Gamification in EFL classroom to support teaching and learning in 21st century. JEES (Journal of English Educators Society), [S. l.], v. 6, n. 1, p. 68–78, 2021. DOI: 10.21070/jees.v6i1.882. Disponível em: https://jees.umsida.ac.id/index.php/jees/article/view/882. Acesso em: 13 sep. 2025.